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Which electric door strike is locked during a current failure?

April 26, 2017door electric failure locked strike

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Which electric door strike is locked during a current failure?

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Electric door strikes with fail-locked operation (e.g. Models 12 water-resistant, 14, 17, 19, 141, 142, etc.) are locked during a current failure. The door can only be opened as long as the electric door strike is energized. If alternating current is being used, a typical snapping noise can be heard that is omitted with direct current. The electric door strike is always designed for a momentary contact which is the case when the door is released by a door release pushbutton.